Photosynthesis

Photosynthesis

Wednesday, October 26, 11

Introduction

• Where do we get our food?
• Plant
• How do plants make food?
• Photosynthesis


Time to ﬁll in your notes

• Plants make their own food. This
process is called photosynthesis.
• Glucose is the product.


What is photosynthesis?

• A process where plants make their own
food by absorbing carbon dioxide,
water and light energy.


What are the products?

• They produce glucose and oxygen.


What do you give plants
so that they don’t die?

Carbon Light
Water
Dioxide Energy


What are the products?

Glucose Oxygen


Equation for
Photosynthesis

Chlorophyll


Effect of Light Intensity on
the Rate of Photosynthesis


Effect of temperature on
the Rate of Photosynthesis


Do you think it is good to supply light to
plants for 24 hours? Why?

• No
• It is because the plant will keep on
growing and run out of starch. Hence, it
will die from starvation.
• The rate of transpiration will also be
high.


Why are there more plants in the
equatorial region than the tundra region?

• It is because, the optimum conditions
are achieved.


Work on these questions with your
friend. (Don’t use your notes)

• What are the ingredients for
photosynthesis?
• What are the products for
photosynthesis?
• What is the main purpose of
photosynthesis?


Answers

• Carbon dioxide and water.
• Glucose and Oxygen.
• Plants have to photosynthesize so that
they can get glucose for growing.


Summary
Transformed
Captured by & stored as
Starch
Co
n tai Used to
ne e
di
n Absorbed In sid produce
by

Takes in Produces New
materials
s out
Give Such as
by
ed
ed
Ne Lipids,
Needed
Needed for Proteins
for & Sugar


Summary
Transformed
Captured by & stored as
Starch
Co
n tai Used to
ne e
di
by

Green
materials
plant
s out
Give Such as
by
ed
ed
Ne Lipids,
Needed
Needed for Proteins
for & Sugar


Summary
Transformed
Captured by
Chlorophyll
& stored as
Starch
Co
n tai Used to
ne e
di
by

Green
materials
plant
s out
Give Such as
by
ed
ed
Ne Lipids,
Needed
Needed for Proteins
for & Sugar


Summary
Transformed
Captured by
Chlorophyll
Light
energy
& stored as
Starch
Co
n tai Used to
ne e
di
by

Green
materials
plant
s out
Give Such as
by
ed
ed
Ne Lipids,
Needed
Needed for Proteins
for & Sugar


Summary
Transformed
Captured by
Chlorophyll
Light
energy
& stored as
Starch
Co
n tai Used to
ne e
di
by
Carbon
dioxide Green
materials
plant
s out
Give Such as
by
ed
ed
Ne Lipids,
Needed
Needed for Proteins
for & Sugar


Summary
Transformed
Captured by
Chlorophyll
Light
energy
& stored as
Starch
Co
n tai Used to
ne e
di
by
Carbon
dioxide Green
materials
plant
s out
Give Such as
Oxygen by
ed
ed
Ne Lipids,
Needed
Needed for Proteins
for & Sugar


Summary
Transformed
Captured by
Chlorophyll
Light
energy
& stored as
Starch
Co
n tai Used to
ne e
di
by
Carbon
dioxide Green
materials
plant
s out
Give Such as
Oxygen by
ed
ed
Ne Lipids,
Needed
Needed for Proteins
Water for & Sugar


Summary
Transformed
Captured by
Chlorophyll
Light
energy
& stored as
Starch
Co
n tai Used to
ne e
di
by
Carbon
dioxide Green
materials
plant
s out
Give Such as
Oxygen by
ed
ed
Ne Lipids,
Needed
Needed for Proteins
Water Plant growth
for & Sugar


Summary
Transformed
Captured by
Chlorophyll
Light
energy
& stored as
Starch
Co
n tai Used to
ne e
di
by
Carbon
dioxide Green
materials
plant
s out
Give Such as
Oxygen by
ed
ed
Ne Lipids,
Needed Needed
for
Proteins
Water Plant growth for
& Sugar


Games and Animation

• Photosynthesis Animation
• Water for plants (Game)
• Plants need minerals. (Game)


Photosynthesis

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